“Open” analogues of azacycloalkane mesogens: Liquid-crystalline diethylenetriamides


  • Two of us, U. S. and G. L., gratefully acknowledge the financial support of the Deutsche Forschungsgemeinschaft (La 662/1-2). Furthermore, they would like to thank Prof. O. Nuyken München, for his friendly encouragement.


Liquid crystals containing “open” analogues of the mesomorphic amide 1,4,7-triazacyclononane, i.e., 3,4-bis(alkoxy)- benzoyl substituted diethylenetriamine, are reported, showing that the closed-ring structure of the central core is not essential for mesomorphism in these compounds. The Figure shows the pronounced pseudo-focalconic texture observed under the polarizing microscope for the decy1 derivative.

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